JP2557315B2 - Container with closed lid - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin-made or paper-made container with a lid for containing foods, especially prepared foods containing fluid such as broth, in a supermarket or a store.

[0002]

2. Description of the Related Art Various types of resin-made and / or paper-made containers with lids that are lined up in stores are known.
Among them, for example, a container 101 as shown in FIG. 6 has an annular bent portion 101a whose mouth edge has an outward hook-shaped cross section in consideration of strength.
Then, the ring-shaped bent portion 102a of the lid 102 is fitted.

As shown in the partially enlarged view of FIG. 7, this fitting is performed by the outer periphery 101b of the bent portion 101a of the container 101 on the outer edge side.
The inner side of the outer peripheral side 102b of the bent portion 102a of the lid 102 and the taper surface of the angle θ1 at which the lid entrance side of the lid opens
Tapered surface is formed at substantially the same angle, the container 101a bending
Mouth edge in the circumferential 101c bending portion is bent and the tapered surface and the lid 102 of the angle θ2 which cover the inlet side is freely i.e. diameter narrows
The tapered surface of the outer periphery 102c on the side of the mouth edge is formed at substantially the same angle to form a dovetail shape, and the lid is a container in the opposite direction from the normal taper fitting, that is, when the small diameter portion crosses over the large diameter end. It is made to be difficult to get out of.

Further, in the enlarged view of the fitting portion of another embodiment shown in FIG. 8, the fitting surfaces 101c and 102c on the rim side are formed to be straight or have a tapered opening at the entrance by a draft, and the taper fitting in the opposite direction to the outside. The lid makes it difficult to remove from the container.

[0005]

In the former case, which is a dovetail-shaped mating surface described in the prior art, the contact pressure is weak and the entire circumferences of both surfaces are not always in close contact. Since also only one of the cross-sectional shape of the latter Figure 8 is the fitting of the lid 102 and the container 101 of the container with lid engaged with only the tapered surface of the bent portion outside the edge inner peripheral 102b and the bent portion outside edge periphery 101b,
Similarly, the contact pressure is weak and the entire circumference is not intimately adhered, and when a side dish containing fluid such as broth is put in the container, broth may flow out during transportation or placement. Was.

[0006] In recent years, in order to prevent the outflow of broth, a method called easy open easy peel has been used. This method requires two steps, namely, a step of applying an adhesive to the joint between the container and the lid and a step of putting the product and then bringing the lid and the container into close contact with each other, resulting in a high cost. Further, since the sheet is formed from a sheet, the thickness of the formed portion is not strictly constant, and there is a problem that there is immovability and uneven contact occurs, which cannot be a stable measure against juice leakage.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to enhance the airtightness with a container when the lid is capped and to store the fluid inside. It is an object of the present invention to provide a hermetically sealed container with a lid that is stable in quality and that does not easily flow out and is not expensive.

[0008]

[0009]

With a lid for crowning an annular bent portion of a resin-made or paper-made lid (11) on an annular bent portion (2) having a hook-shaped cross section extending outward from the rim of the resin-made or paper-made container (1) The container (1) is formed such that the inner circumference (4) of the bent portion on the rim side of the bent portion is formed so that the inlet is opened and the bent portion (1) is formed.
The outer peripheral side (14) of 2) is formed to have a taper slightly smaller than the taper of the inner peripheral side (4) of the bent portion so that the annular convex corner portion makes an annular line contact. 14) is formed so that the outer diameter of the annular convex corner portion is slightly larger than the inner diameter of the contact portion of the inner periphery (4) of the bent portion on the lip edge side, and the inner periphery of the outer periphery of the bent portion of the lid (11) ( The bent portion (12) of the lid (11) by engaging 13) with the outer circumference (3) of the container (1) on the outer edge side of the bent portion.
The surface pressure of the contact portion of the annular wire is increased by the elasticity of.

[0011] outer portion inner periphery of the container bend of (1) an outer edge out <br/> peripheral (3) and the lid inlet portion of the large diameter tapered folding portion of the lid (2) (12) ( 13) is a taper fitted to this.

[0012] a taper 1 ° to 5 ° for outer edge outside <br/> circumference of the bent portion of the container (1) (2) (3), the mouth edge of the bent portion of the container (1) (2) The inner circumference taper is 2 ° to 10 °,
Tapered bent portions opening edge outer periphery of the lid (14) is Ru Oh intended to about 1 ° or smaller taper than <br/> opening edge inner circumferential taper of the bent portion.

[0013] The outside of the bent portion of the lid (21) (22)
Ru Oh those engaging portion engaging the lower end of the outer edge (33) of the bent portion of the container (31) (32) (24) is formed on the edge side in the periphery (23).

[0014] The outside of the bent portion of the lid (21) (22)
Engagement protrusions (2) that engage with engagement recesses (44) of the outer edge (43) of the bent portion (42) of the container (41) on the edge-side inner circumference (23).
4) is formed.

[0015 ]

[Action] becomes a state where the top convex angle portion 14a of the bent portion opening edge covered with the lid 11 to the container 1 <br/> periphery 14 raised into contact with the bent portion opening edge inner circumferential 4 of the container. When the a bent portion bent portion by applying the vertical is fitted in this state, the bent portion outside the edge inner periphery of the lid engages the bent portion outside edge periphery of the container and at the same time leaving the lid is prevented, folding tip annular convex corner parts opening edge outer periphery is pressed by elastic force of the lid of the bending portion 12 in the inner periphery of the bent portion opening edge maintaining the sealing property between the lid and the container.

[0016]

Embodiments will be described below with reference to the drawings. Vacuum or pressure molding with thermoplastic sheet, heat
Injection molding using plastic resin pellets or blow molding
Shape (hollow molding), paper quality sheet, artificial paper, or
As shown in FIG. 1, a container 1 made by press-molding a mixed material of resin and paper is made into a truncated pyramid shape with a tapered opening so that it can be easily released from the mold, and the mouth side opens. For reinforcement, a ring-shaped bent portion 2 having a hook shape is formed outward in cross section. The outer periphery 3 of the bent portion 2 is formed in a reverse taper having a large diameter on the upper side (lid entrance), and the taper angle θ1 is in the range of 1 ° to 5 °, preferably 2 ° to 3 °.
It has been. Further, the inner circumference 4 of the bent portion on the rim side is formed into a draft taper with a large entrance, and the taper angle θ2 is 2 ° to 1
The range is 0 °, preferably 4 to 6 °.

[0017] Then have the tongue 5 which projects at right angles to the side is formed in a part of the lower end of the bent portion outside the edge periphery 3, substantially parallel to the diagonal line without the tongues of the container 1 to the tongue 5 An oval concave fitting portion 6 that serves as a female hook is formed. The concave fitting portion 6 is formed in a dovetail-shaped cross section with a widened bottom. Furthermore the corners of the tongue 5 and the counter position is formed tongues 7 which is a tongue blade right angle knob of the bent portion outside the edge periphery 3 as the cover 11 is easily opened.

The lid 11 to be crowned in the container 1, an annular bent <br/> up part 12 that engages with the bent portion 2 of the annular vessel 1 as shown in FIG. 2 are formed, the bent portion outer edge tightly fitted to the bent portion 12 and the bent portion outside edge periphery 3 of the container 1
Folding to be fitted on the inner side circumference 13 and the inner circumference 4 on the rim side of the bent portion of the container
An outer circumference 14 on the rim side of the bent portion is provided. The bent portion outside edge inner peripheral 13 is lower (cover inlet) is formed into an inverted taper of the small diameter, taper angle θ3 is substantially the same angle as .theta.1.

Further, the ring at the tip of the outer circumference 14 on the rim side of the bent portion
Jo convex angle portion 14a of the diameter D2 the container 1 of the tapered surface formed by being bent portion opening edge inner fourth small diameter end toward the line contact portion of the inner diameter D1 slightly example 0.1 to 0.5 mm, preferably formed on 0.2mm larger size, extraction taper of the bent portion opening edge <br/> periphery 14 angle θ4 of about 1 corresponds to 2 ° to 10 ° of the taper angle θ2 of the bent portion opening edge inside 4 of the container 1
It is made smaller than °. That is, if θ2 is 5 °, θ
4 becomes 4 °.

Furthermore when it bears the lid 11 to the container 1 tongue 5
Fitting and have from the lower end of the corresponding small to the position of the tongue 15 is bent portion outside edge inner peripheral 13 is formed so as to protrude at right angles to the side, in a substantially central position corresponding to凹嵌engaging portion 6 A circular convex fitting portion 16 is formed on the lower side thereof. The dovetail end of the cross section of the convex fitting portion 16 is made to have a diameter slightly larger than, for example, 0.3 to 0.5 mm than the width of the dovetail recessed fitting portion 6 having a bottom opening.

[0021] The base of the tongue 15 is adapted to be easily bent to form a thin portion 18 along the outer periphery of the lid 11. Further and tongue 17 projecting laterally perpendicularly from the lower end position to the bent portion outside the edge inner peripheral 13 corresponding to the tongue 7 of the container 1 is formed, the tongue 7 of the tongue 17 and the container 1 respectively It is slightly out of phase to make it easier to pinch.

The following describes operation of the embodiment of the present invention will be described. For example, in a preparation room such as a supermarket, a container 1 is filled with a side dish containing a liquid such as broth and the lid 1
1 is placed on the container 1, and the concave fitting portion 6 of the tongue piece 5 serving as a hook and the convex fitting portion 16 of the tongue piece 15 are pressed against each other from above and below to fit the bent portion 12 of the lid 11 to the container 11 When it is fitted into the bent portion 2, first, the annular convex corner portion of the tip of the bent portion rim side outer periphery 14 comes into contact with the bent portion rim side inner peripheral surface in an annular line contact to be lifted.

[0023] fitted with dividing the container and the lid up and down in this state, the bent portion outside the edge inner peripheral 13 and the container 1 of the bent portion outside the edge periphery 3 of the lid 11 is fitted by the reverse taper, lid 1
Bent portions outside edge periphery 14 of 1 because the diameter D2 of the annular projection angle of the tip than the diameter D1 of the line contact portion of the bent portion opening edge inner circumferential 4 of the container 1 is made slightly larger, 3 and deformed folding section 12 and its periphery as by its elasticity, bending portion opening edge periphery 14 of the container 1 the bent portion opening
The fluid is pressed against the inner circumference 4 on the edge side and linearly adheres to it to maintain a high degree of airtightness.

In order to take out the contents of the container, one tongue piece, for example 7, is pinched with the left hand and the other tongue piece 17 is held with the right hand, and the bent portion 12 and the bent portion 2 are disengaged when opened up and down. Lid 1
When the 1 is lifted, the thin portion 18 of the tongue piece 15 is bent and the contents can be taken out without any trouble even if the fitting portion that serves as a hook remains connected. When it is desired to remove the lid 11 from the container 1, the lid 11 can be removed by pulling apart a fitting portion serving as a hook.

[0025] Incidentally, the outer edge side in the periphery 13 of the bent portion 12 of the outer edge periphery 3 of the bent portion 2 of the container 1 and lid 11 is not limited to those which fit denoted by the reverse taper, FIG. 4 As shown in FIG. 3, engaging projections 24 are provided inwardly on the outer peripheral side inner circumference 23 of the bent portion 22 of the lid 21 at several places or all around the inner circumference, and when the lid 21 is capped on the container 31, this engagement The fitting convex portion 24 can also be engaged and fitted so as to pass through the outer edge 33 of the bent portion 32 and be held.

[0026] The shape of the bent portion 22 of the cover 21 as shown in FIG. 5 is identical to FIG. 4, the bent portion 4 of the container 41
Engagement recesses 44 are provided on the outer edge 43 of the second part partially or all around, and when the lid 21 is capped on the container 41, the engagement projections 24 are engaged and fitted so as to fit into the engagement recesses 44. You can also In addition, although an example of a container with a lid made of resin has been described in the present embodiment, the lid and the container can be made of paper,
Further, it is also possible to make a container with a lid in which one of the lid and the container is made of resin and the other is made of paper.

[0027]

Since the present invention is configured as described above, it has the following effects. Rim of the bent part of the lid
Side outer peripheral tip annular convex corner an outer diameter slightly larger form than the inner diameter of the contact portion in the bent portion opening edge periphery of bending and the bending portion by applying a the bent portion bent portion covered with a lid to the container in the vertical
When fitted in the respective outer edge parts, the bent portion and the peripheral is deformed by bending portion opening edge side periphery thereof tip ring
Since the convex corners are pressed against the inner circumference of the rim of the bent portion so as to be in close contact with each other by the annular linear contact so that airtightness is maintained, even if a side dish containing a fluid is contained in the container, for example. It becomes difficult for the fluid to flow out, and the fluid will not flow out and pollute the surrounding products during transportation or depending on the storage location.

Further, in the molding from a sheet, a special process such as easy-open / easy-peel is not required, and the present invention can be achieved only by molding a container in a normal process, so that the product cost can be made much lower. it can.

[Brief description of drawings]

FIG. 1 is a view of a container with a closed lid according to an embodiment of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is an enlarged view of a main part.

2A and 2B are views of a lid of a closed lid-equipped container according to an embodiment of the present invention, in which FIG. 2A is a front view, FIG. 2B is a side cross-sectional view, and FIG.

FIG. 3 is a view showing a fitted state of a bent portion and a bent portion when the lid is capped on the container.

FIG. 4 is an enlarged view of a main part of another embodiment.

FIG. 5 is an enlarged view of a main part of another embodiment.

FIG. 6 is a side sectional view of a conventional container with a lid.

FIG. 7 is an enlarged view of a main part of FIG. 6;

FIG. 8 is an enlarged view of another main part of the conventional technique.

[Explanation of symbols]

1 container 2 bent part 3 bent portion outside edge periphery 4 bent portion opening edge side inner 11 cover 12 bent portion 13 bent portion outside edge inner peripheral 14 bent portion opening edge side outer peripheral 14a tip projecting corner

Claims (5)

(57) [Claims] 1. From the rim of a resin or paper container (1)
The annular bend (2) with a hook-shaped cross section facing outward is made of resin or
A lid with a ring-shaped bent portion of a paper lid (11)
Inner circumference (4) of the container (1) on the mouth side of the bent portion
The entrance is opened to form a taper of any
The outer periphery (14) of (12) is a line with annular convex corners
From the taper of the inner circumference (4) of the bend edge to make contact
Formed to a slightly small taper,
The circumference (14) is the outer diameter of the ring-shaped convex corner,
Shaped slightly larger than the inner diameter of the contact part of (4).
The inner circumference of the bent portion of the lid (11) on the outer edge side
(13) on the outer circumference (3) of the container (1) on the outer edge side of the bent portion
Bent portion (12) of the lid (11) by engaging
It is characterized in that the surface pressure of the contact portion of the circular wire is strengthened by the elasticity of
A container with a closed lid. 2. The outer periphery of the bent portion (2) of the container (1) on the outer edge side
The lid entrance of (3) is a large-diameter taper and the lid is bent.
The taper with which the inner circumference (13) of the outer edge of (12) fits
The container with a closed lid according to claim 1. 3. The outer periphery of the bent portion (2) of the container (1) on the outer edge side.
The taper of (3) is 1 ° to 5 °, and the container (1) is bent.
The inner peripheral taper of the mouth portion (2) is 2 ° to 10 °, and the lid
The bent portion of the outer edge (14) of the outer periphery is tapered at the bent portion.
A taper smaller than the edge side inner circumference taper by about 1 ° or more
Item 3. A container with a closed lid according to Item 2. 4. The outer edge of the bent portion (22) of the lid (21)
The outer edge of the bent portion (32) of the container (31) on the side inner circumference (23)
An engaging protrusion (24) is formed which engages with the lower end of (33).
The container with a closed lid according to claim 1. 5. The outer edge of the bent portion (22) of the lid (21)
Outer edge of the bent portion (42) of the container (41) on the side inner circumference (23)
The engaging projection (2) which engages with the engaging recess (44) of (43)
4) The sealed lid with container according to claim 1, which is formed.
vessel.